Omega Products FL-1902 Installation Manual

omega.com

®

®

FL-1900 Series
Rotameters

Operator’s Manual:

INSTRUCTION

SHEET

M0360/0201

®

6

4

6

0.5

SLMP AIR 70° 7 14.7 PSIA

SECTION 1 INTRODUCTION

1.1 GENERAL DESCRIPTION

OMEGA®Series FL-1900 Rotameters provide an

economical and efficient means of flow rate indication
when accuracy is not critical. Typical applications
include purging, seal oil systems, bearing lubrication,
and cooling water flow indication.

Engineering design makes them especially suitable
for use with corrosive liquids and gases, and
installation in corrosive atmospheres.

The Series FL-1900 Rotameters are furnished with a
control valve, but are available without the valve.
Indicator body and supported frame are constructed
from stainless steel. Sealing parts are manufactured
from vinylidene fluoride resin (Kynar). O-ring seals
are Viton-A. The meter is totally enclosed within a
cover of high impact polycarbonate (Lexan).

1.2 SPECIFICATION

The following specifications apply to all models.

CAUTION

Do not use this meter in excess of the specified values

PRESSURE RATINGS: 200 psig maximum
TEMPERATURE RATING: 250

°

F maximum
REPEATABILITY: ± 0.5 % of full scale
ACCURACY: Meter specified to have an accuracy

of ± 10 % of maximum scale from
100 % to 10% of scale reading.
Conforms to ISA R.P. 16.1,

Specification 10-S-10
DIMENSION: See Figure 1.1
METERING TUBE: Borosilicate glass
END FITTINGS: 316SS
WINDOW SHIELD: High Impact Plastic

FLOAT STOPS: Teflon
TUBE PACKING: Viton
O - RINGS: Viton
SCALE: 65mm direct reading for air or water

SECTION 2 INSTALLATION

2.1 RECEIPT OF EQUIPMENT

When the equipment is received, the outside packing
cases should be checked for any damage incurred

during shipment. If the packing case is damaged, the
local carrier should be notified at once regarding his
liability.

Remove the envelope containing the shipping list.
Carefully remove the equipment from the packing
case. Make sure spare or replacement parts are not
discarded with the packing material. Inspect for
damaged or missing parts.

2.2 RETURN SHIPMENT

Do not return any merchandise without an Authorized
Return (AR) number. Call OMEGACustomer Service

Department at [phone].

CAUTION

It is recommended that this publication be read in its entirety before
performing any operation. Failure to understand and follow these
instructions could result in serious personal injury and/or damage
to the equipment

WARNING

Glass metering tubes are designed for operation up to the maximum operating pressures and temperatures as specified
herein. Due to the inherent brittle characteristic of glass and conditions beyond our control, tube breakage could result
below specified operating conditions. Possible glass tube breakage represents a potential hazard to operating personnel;
therefore, operator protection should be supplied where operating pressures may exceed 50 psig.. A safety shield constructed
of 1/2 inch acrylic plastic may be used or the glass tube meter maybe replaced with an all metal (armored) meter.

Figure 1.1 Dimension Diagram

2.3 FILTER INSTALLATION

It is recommended that a filter with a rating of two (2) microns
be installed on the inlet side of the meter. This filter will reduce
the amount of foreign matter that could impair operation of
meter.

2.4 INSTALLATION OF METER

a. Check the control valve is fully closed.
b. Check the valve body is fully seated in meter

frame. Finger tighten if necessary.

c. Slowly tip meter back and forth and check that

float has freedom to move.
d. Remove dust covers from the inlet and outlet connections.
e. Install inlet and outlet line connections. Inlet

connection is at the zero end of the meter

.

2.5 CONTROL VALVE REPOSITIONING PROCEDURE

The user may desire to change the control valve from
the inlet side of the meter to the outlet side. If meter
is installed in the line, make sure that flow is stopped
to the meter. Failure to do this may result in a safety
hazard.
a. Disconnect inlet and outlet lines to meter.
b. Remove metering tube and seal spindle. Refer to

paragraph 4.3
c. Remove check ball from inside seal spindle.

Retain check ball for future use.
d. Install seal spindle in meter body. Refer to

paragraph 4.4
e. Turn meter 180

°

from original position so control

valve is now on outlet and seal spindle is on inlet.
f. Install metering tube. Refer to paragraph 4.4
g. Connect inlet and outlet lines to meter.

SECTION 3 OPERATION

3.1 GENERAL

After the meter has been installed it is ready for
operation. During operation make sure that meter
temperature and pressure specifications are not exceeded,
as stated in paragraph 1.2

When the valve stem knob is turned counterclockwise to
the stop, the valve is fully open. Flow indication is
measured using the center of the float as the reference
point. A check valve is incorporated within the seal
spindle. The check valve prevents reverse flow through
the meter when upstream flow is stopped. When the
control valve is installed on the outlet of the meter, the
check valve is not included.

SECTION 4 MAINTENANCE

4.1 GENERAL

No periodic maintenance, oiling, or cleaning is required
for the meter or meter components when it is used in
normal applications. It may be necessary to remove the
metering tube and components for cleaning when various
liquids have stained or left a deposit.

It is recommended that the meter and meter components
be ultrasonically cleaned if possible. If ultrasonic cleaning
is not available, use a suitable solvent. Tube and float may
be cleaned with a pipe cleaner or similar accessory.

4.2 SERVICE INFORMATION

Should this equipment require repair or adjustment,
contact OMEGA ENGINEERING Customer Service
Department at [phone].

It is important that servicing be performed only by
trained and qualified service personnel. If this
equipment is not properly serviced, serious personal
injury and/or damage to the equipment could result.

4.3 DISASSEMBLY PROCEDURE (SEE FIGURE 5.1)

a. Remove shield (8) by squeezing sides at top and

bottom, and pulling forward.

b. Hold metering tube (1), and rotate seal spindle (4)

to the right until the stop is reached. Remove
metering tube.

c. Using tweezers, remove outlet float stop (2).

Remove float from metering tube. Be careful not
to drop float. Remove inlet float stop (2). If float is
stuck in metering tube, a rod (wooden dowel or
pipe cleaner preferred) may be inserted through
the inlet end of the tube, and the float pushed
through. Care must be taken not to score or
scratch the tube.

d. Depress seal spindle retainer tab. Rotate seal

spindle (4) to the left until it is disengaged from
the meter. Be careful not to drop the check ball (6)
from inside the seal spindle. Remove check ball.

e. Remove control valve (9) from meter body.

4.4 ASSEMBLY PROCEDURE (SEE FIGURE 5.1)

After the meter and the meter components have been
cleaned or checked, the following assembly procedures
should be followed. A separate assembly procedure
for the control valve is given in paragraph 4.6
a. Insert control valve body into meter frame and

finger tighten to secure.

b. Insert check ball (6) into seal spindle (4). Check for

freedom of movement.

c. Depress seal spindle retainer tab. Insert seal

spindle (4) into end fitting, and turn to the right
until fully seated. Release seal spindle retainer.

d. Insert inlet float stop (2) through outlet end of

metering tube. Using a rod (wooden dowel or
pipe cleaner preferred) push inlet float stop
through metering tube until it is approximately

1

/16 to 1/32 inch from end of metering tube.

(See Figure 4.2).
e. Insert float into metering tube.
f. Insert outlet float stop (2). Push float stop into

metering tube, until it is seated approximately

1

/16 to 1/32 inch from end of tubes. (See Figure 4.2).

Figure 4.2 Float Stop Installation Diagram